/*
* Copyright (c) 2002, 2004, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.nio.cs.ext;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;
import sun.nio.cs.HistoricallyNamedCharset;
public class MS950_HKSCS extends Charset implements HistoricallyNamedCharset
{
public MS950_HKSCS() {
super("x-MS950-HKSCS", ExtendedCharsets.aliasesFor("x-MS950-HKSCS"));
}
public String historicalName() {
return "MS950_HKSCS";
}
public boolean contains(Charset cs) {
return ((cs.name().equals("US-ASCII"))
|| (cs instanceof MS950)
|| (cs instanceof MS950_HKSCS));
}
public CharsetDecoder newDecoder() {
return new Decoder(this);
}
public CharsetEncoder newEncoder() {
return new Encoder(this);
}
private static class Decoder extends HKSCS.Decoder {
private MS950.Decoder ms950Dec;
/*
* Note current decoder decodes 0x8BC2 --> U+F53A
* ie. maps to Unicode PUA.
* Unaccounted discrepancy between this mapping
* inferred from MS950/windows-950 and the published
* MS HKSCS mappings which maps 0x8BC2 --> U+5C22
* a character defined with the Unified CJK block
*/
protected char decodeDouble(int byte1, int byte2) {
char c = super.decodeDouble(byte1, byte2);
return (c != REPLACE_CHAR) ? c : ms950Dec.decodeDouble(byte1, byte2);
}
private Decoder(Charset cs) {
super(cs);
ms950Dec = new MS950.Decoder(cs);
}
}
private static class Encoder extends HKSCS.Encoder {
private MS950.Encoder ms950Enc;
/*
* Note current encoder encodes U+F53A --> 0x8BC2
* Published MS HKSCS mappings show
* U+5C22 <--> 0x8BC2
*/
protected int encodeDouble(char ch) {
int r = super.encodeDouble(ch);
return (r != 0) ? r : ms950Enc.encodeDouble(ch);
}
private Encoder(Charset cs) {
super(cs);
ms950Enc = new MS950.Encoder(cs);
}
}
}